Hollywood is almost universally terrible at hacker movies, unfortunately, dating back to when they perverted Frankenstein. I haven't seen Swordfish, but what I've heard doesn't make me optimistic.

Real Genius and Ghostbusters are two pretty good hacker movies. I hear Buckaroo Banzai is in the same ballpark, but I haven't seen the whole thing. I also enjoyed Flight of the Navigator, but it's really more about magic than about hacking.